body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  color: var(--text-primary);
  background: var(--bg-base);
  -webkit-font-smoothing: antialiased;
}
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  z-index: 9999;
}

.container { max-width: var(--container-max); margin: 0 auto; padding: 0 1.5rem; }
.container-narrow { max-width: 800px; }
.section { padding: var(--space-section) 0; }
.section-alt { background: linear-gradient(180deg, var(--bg-alt) 0%, transparent 100%); }
.section-warm { background: linear-gradient(165deg, rgba(255, 165, 0, 0.05) 0%, rgba(0, 123, 255, 0.02) 50%, transparent 100%); }
.section-green { background: linear-gradient(195deg, rgba(0, 204, 102, 0.06) 0%, transparent 60%); }

.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-subtle), transparent);
  margin: 0 auto;
  max-width: 400px;
}
.section-divider-top { margin-bottom: -1px; }
.section-divider-mid { margin-top: -1px; margin-bottom: 0; }
.section-head {
  text-align: center;
  margin-bottom: 3rem;
}
.section-eyebrow {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--blue-end);
  margin-bottom: 0.75rem;
}
.section-head h2 {
  font-family: var(--font-heading);
  font-size: var(--text-h2);
  font-weight: 700;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-head .sub { color: var(--text-secondary); font-size: 1.125rem; max-width: 560px; margin: 0 auto; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: var(--radius-btn);
  transition: all var(--motion);
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--gradient-blue);
  color: #fff;
  box-shadow: 0 4px 16px rgba(0, 123, 255, 0.35);
}
.btn-primary:hover {
  filter: brightness(1.1);
  box-shadow: 0 6px 24px rgba(0, 123, 255, 0.45);
  transform: translateY(-1px);
}
.btn-secondary {
  background: transparent;
  color: var(--blue-end);
  border: 1px solid var(--border-highlight);
}
.btn-secondary:hover {
  background: rgba(0, 123, 255, 0.15);
  border-color: var(--blue-end);
}
.btn:focus-visible { outline: 2px solid var(--blue-end); outline-offset: 3px; }
a:focus-visible { outline: 2px solid var(--blue-end); outline-offset: 2px; }

.tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}
.tag-blue { background: rgba(0, 123, 255, 0.2); color: var(--blue-end); }
.tag-orange { background: rgba(255, 165, 0, 0.2); color: var(--orange-end); }
.tag-green { background: rgba(0, 204, 102, 0.2); color: var(--green-end); }